source.addColumn(c);
source.addColumn(new Column("F3", null, null, null));
RecordIterator it = read("F1,F2,F3\na,b;d;e,c");
Record r = it.next();
assertEquals("a", r.getValue("F1"));
assertEquals("c", r.getValue("F3"));
Collection<String> values = r.getValues("F2");
assertEquals(3, values.size());
assertTrue(values.contains("b"));
assertTrue(values.contains("d"));
assertTrue(values.contains("e"));
}